MRAP The Pentagon has launched a quickfire challenge for a lighter, more nimble blast-proof ride, called the MRAP All Terrain Vehicle (M-ATV) The design is a 4×4 built around the chassis of the Medium Tactical Vehicle Replacement, a seven-ton truck that had already seen service in Afghanistan. It shares the TAK-4 independent suspension system with the MTVR.  The new vehicle also has a battle-tested...